M.C.Qs on Solution & Concentration ......Unit # 9

M.C.Qs  on Solution & Concentration ......Unit # 9

1.      Solution are the examples of :
(a)
Compounds
(b)
Homogenous mixture
(c)
Heterogeneous mixture
(d)
Colloids

2.   The amount of solute present in a given amount of solvent or solution is called:
(a)
Concentration
(b)
Molarity
(c)
Molality
(d)
Normality

3.      Alloys are the examples of:
(a)
Compounds
(b)
Elements
(c)
Solutions
(d)
Colloids

4.        An alloy is type of…….. solution:
(a)
Solid-gas
(b)
Solid-solid
(c)
Liquid-liquid
(d)
Gas-gas

5.   In which mode of expression does the concentration of solution remains independent of  temperature?
(a)
% concentration
(b)
Molarity
(c)
Molality
(d)
Normality

6.       Isotonic solutions must have the same:
(a)
Density
(b)
Normality
(c)
Volume
(d)
osmotic pressure
7.       A solution of known strength or concentration is called:
(a)
Standard solution
(b)
Normal solution 
(c)
Molal solution
(d)
Suspension

8.       The number of gram equivalents of solute dissolved per dm3 of solution is called:
(a)
Mole fraction
(b)
Normality
(c)
Molality
(d)
concentration 

9.  The number of moles of solute dissolved per kilogram of solvent is called:
(a)
Mole fraction
(b)
Normality
(c)
Molality
(d)
% concentration

10.         The number of moles of solute dissolved in 1 liter of solution is called:
(a)
molarity
(b)
Normality
(c)
Molality
(d)
% concentration

11.         A solution which contains 1 mole of solute dissolved in 1000 cm3 of water is designated by:
(a)
1M
(b)
1m
(c)
1N
(d)
10%

12.         A solution which contains 1 mole of NaCl dissolved in 1 kg of water is designated by:
(a)
1M NaCl
(b)
1m NaCl
(c)
1N NaCl
(d)
10% NaCl

13.         A molal solution contains:
(a)
1 mole of solute per dm3 of solution
(b)
1 mole of solute per 1 kg of solvent
(c)
1 mole oc solute per 1000 cm3 of solution
(d)
1 mole of solute per half liter of solution

14.     A molal solution is one that contains one mole of a solute in:
(a)
1000 g the solvent
(b)
One liter of the solvent
(c)
One liter of the solution
(d)
22.4 liter of the solution

15.     1N H2SO4 solution contains:
(a)
98 g/dm3           
(b)
9.8 g/dm3
(c)
980 g/dm3
(d)
49 g/dm3

16.    1N NaOH solution contains:
(a)
4 g/dm3              
(b)
20 g/dm3
(c)
80 g/dm3
(d)
40 g/dm3

17.     The decimolar solution of H2SO4 solution contains:
(a)
98 g/dm3           
(b)
9.8 g/dm3
(c)
980 g/dm3
(d)
4.9 g/dm3

18.     The semimolar solution of NaOH contains:
(a)
4 g/dm3              
(b)
20 g/dm3
(c)
40 g/dm3
(d)
2 g/dm3

19.  56 g of KOH is dissolved in 1 liter of water. The solution obtained is said to be:
(a)
Molar
(b)
Semimolar
(c)
Decimolar
(d)
decamolar

20.         The semimolar solution of KOH contains:
(a)
56 g/dm3           
(b)
5.6 g/dm3
(c)
28 g/dm3
(d)
112 g/dm3

21.         5 liters of 0.5M HNO3 solution contains:
(a)
2.5 moles
(b)
3moles
(c)
3.5 moles
(d)
4 moles

22.         2 liters of 0.25M NaCl solution contains:
(a)
29.25g
(b)
58.5g
(c)
5.85g
(d)
585g

23.  How many gram of Na2CO3 is required to prepare its 0.5M solution of 250ml?
(a)
132.5 g
(b)
0.1325 g
(c)
1.325 g
(d)
13.25 g

24.  The molarity of solution containing  45g of H2C2O4 in 250ml of solution is:
(a)
0.25 M
(b)
2.5 M
(c)
0.025 M
(d)
2 M
25.   A 10M solution stands for:
(a)
Normal solution
(b)
Molar solution
(c)
Decamolar solution
(d)
Decimolar solution 
26.     A N/10 solution stands for:
(a)
Normal solution
(b)
Molar solution
(c)
Seminormal  solution
(d)
Decinormal solution 

27.     A N/2 solution stands for:
(a)
Normal solution
(b)
Molar solution
(c)
Seminormal  solution
(d)
Decinormal solution
28.    The molarity of solution that contains 10g of urea in 500 ml of solution is:
(a)
0.33 M
(b)
3.34 M
(c)
0.033 M
(d)
2.5 M

29.  1m Na2CO3 solution contains ……g of in 1000g of water.
(a)
1.06 g
(b)
10.6 g
(c)
106 g
(d)
53 g
30.   How many gram of NaCl are to be taken to prepare 100 ml of 10% salt solution?
(a)
4 g
(b)
40 g
(c)
80 g
(d)
10 g
31.     How many gram of HCl are in 1000 g of a 10 % solution?
(a)
100 g
(b)
10 g
(c)
9,8 g
(d)
98 g

32.   The sum of the mole fractions of solute and solvent is equal to:
(a)
0
(b)
1
(c)
2
(d)
3

33. The suspended particles in suspensions are generally of the size:
(a)
10nm
(b)
100nm
(c)
1200nm
(d)
1nm

34.   The size of constituent particles in solution is generally:
(a)
1nm
(b)
10nm
(c)
1000nm
(d)
2-1000nm

35.     The size of dispersed particles in colloids is:
(a)
1nm
(b)
10nm
(c)
1000nm
(d)
2-1000nm

36.    The intermediate type of mixture is :
(a)
Solution
(b)
Suspension
(c)
Colloids
(d)
None of the above



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